engineering recuitment ONGC AEE Mechanical Mock Test 2025 Engineering Mathematics Differential Equations
\(\cos \frac{\pi}{3}+\frac{1}{2} \cos \frac{2 \pi}{3}\) + \(\frac{1}{3} \cos \frac{3 \pi}{3} \ldots \infty\) = will
1
-1
2
1
3
\(\frac{1}{2}\)
4
0
5
2